Thermostatic heat-regulator.



PATENTED SEPT. 15, 1903.

' v A.' M. BUTZ.

THERMOSTATIG HEAT REGULATOR. APPLICATION FILED PEB.17.1900. RENEWED-FEB. 12.1903.

2 SHEETS-SHEET 1.

N0 MODEL.

llllll No. 739,055. PATENTED SEPT. 15, 1 903. A. M. BUTZ. 'THERMOSTATIO HEAT REGULATOR.

APPLICATION FILED FEB. 17. 1900. RENEWED FEB. 12. 1903.

N0 MODEL. 2 SHEETS-SHEETrZ.

A l I .J 4 D 72 V [i O I? E O O 68 i e l I B x H ei.

LLQE e I i 1 I LI 1 I l 5] UNITED- STATES Batented September 15, 190B.

PATENT OFFICE.

THERMQSTATIC HEAT-REGULATOR.

SPECIFICATION forming part of Letters PatentNo. 739,055, dated September 15,1903. Application filed February 17, 1900. Renewed February 12, 1903. Serial No. 143.14.4- (No model.)

To all whom ita my concern.-

Be it known that I, ALBERT M. BUTZ, a citi- Zen of the United States, residing at Oakpark,

in the county of Cook and State of Illinois, have invented certain new and useful ImprovementsinThermostaticHeat-Regulators, of which the following, when taken in connection with the drawings accompanying and forming a part hereof, is a full and complete description, suflicient to enable those skilled in the art to which it pertains to understand, make, and use the same This invention relates to a thermostatic heat-regulator to be attached to an ordinary diaphragm-controlled steam-valve on a steam heating-radiator; and its object is 'to obtain a thermostatic heat=regulator simple in construction,efiective in operation, and not liable to get out of order.

A further object of this invention is to obtain a mechanism whereby in the thermostatic operation thereof communication between the diaphragm-chamber of an ordinary diaphragm-controlled steain-su pply valve and the atmosphere will be closed prior to the establishment of communication between the source of supply of air under pressure and such diaphragm-chamber and also in such thermostatic operation of the mechanism communication between the source of supply of air under pressure and such diaphragnr chamber will be closed before establishing communication between such diaphragm and the atmosphere.

In the drawings referred to as forming a part hereof, and in which a reference-letter applied to indicate a given part is used to designate such part throughout the several figures, Figure l is an elevation of a thermo-- grammatic view showing both air-valves with:

their connections in section. The several parts illustrated in Figs. 1 and 2 are in proper relative position for the valve illustrated in Fig. 2 to be closed and the valve illustrated and the inner rod b, extending through the tube B and secured at one end to such tube, as by connection D, and at the other end pivotally secured to the lever. E, as by pivot e. Lever E consists of a U -shaped arm fulcru med, as at e, to head B of expansible member B. Head B is secured to the tube B, so

that the expansion of that portion of such tube between the support 0 and such head B moves the head B andthepivot e in ear 6 relative to the fulcrum 6, thereby moving the lever E on such fulcrum e. The portion of the tube B between the support 0 and the head D, secured therein at one end of such tube, moves the-head D and rod 19, secured in such head, longitudinally, together with the fulcrum 12, relative to pivot c, thereby moving the lever E. The relative position of-the fulcrum e and pivot c is therefore the same when the tube is held nearly midway thereof in support 0 as if such support'C were at one end of such tube. The inner rod b is of such material as to not expand under a slight variation of temperature to as great an extent as does the tube B. The location of the support 0 on the tube B is immaterial;

F is an air-pr'essure-supplytank-Jhat is, a tank containing air at a pressure sufficient to force the diaphragm in diaphragm steamvalve G into an advanced position, thereby closing such valve to the admission of steam.

from steam-pipe A into radiator I when air from such supply-tank is admitted to the diaphragm-chamber.

11 is a nipple connecting the diaphragmvalve G with the radiator I.

J is an air-conduit extending from the supply-tank F to valve K, discharging air from such supply-tank to such valve.

L is a conduit extending from valve K to valve K.

K is an air-valve, the duplicate of airvalve K,.except that the diaphragm 70 (see Fig. 2) is punctured or omitted therefrom, and in valve K the inlet-conduitJ discharges into one chamber of the valve, and the conduit L (connecting the valves) extends from the other chamber, while the discharge-conduit M of valve K extends from the same chamber of such valve that the connectingconduitLdischargesinto. OonduitMextends from valve K to the diaphragm-chamber of valve G. Valves K K are respectively secured to support 0, as by band K and screws K K \Vhen valve K is open, air is discharged from such valve through the passageway or conduit L into valve K, and valves K K being arranged relative to lever E so that but one thereof can be opened at a given time such air will pass from valve K to and through passage-way or conduit M to the diaphragtn chamber or valve G and close such valve by expanding the diaphragm thereof.

Diaphragm-valve G is an ordinary diaphragm-valve, fortning no part of this invention, and is not, therefore, described in detail.

The construction of the valves K K is well illustrated in Figs. 2, 3, and 5 and comprises, respectively, the tube It, forming the casing of the valve, such tube being open atone end in valve K and closed in valve K at such end by the diaphragm k (preferably of rubber) and at the other end by the end 70 The casing k is divided into two chambers by the plug 70 and band k, such band being preferably of rubber. In valve K conduit J discharges into one of the chambers of the valvecasing, and the conduit L is in communication with the other chamber.

70 is a valve-stem passing loosely through the centrally-extending hole 766 in plug 10 near to the diaphragm 7c in valve K and to about the same location in the valve-casing thereof as in valve K, such diaphragm k being removed, however, (see Fig. 5,) and k is a valve on the end of such valve-stem 7.0

The end of passage-way 7a which is adjacent to the valve k is provided with a valve-seat thereto, and the valve is provided with rubber disk k fitting on such valve-seat.

7c is a spring surrounding the valve-stem and yieldingly holding the valve 70 on its seat k by pressing against said valve at one end and against an arched end plate in the end of the valve-casing. This end plate k receives through a perforation the headed end of valve-stem 70 and is sufficiently arched to permit of a movement of said headed end between the plate 70 and the end of the valvecasing.

In valve K the casing is divided into two chambers, into one of which chambers the conduit L discharges and from which the conduit M extends. When the valve K is opened, air under pressure passes from conduit J through the valve into and through the conduit L, into one of the chambers of valve K, and such valve being closed such air under pressure will pass from such chamber into the conduit M and into the diaphragm-chamber G, closing such valve. The opening of valve K is obtained by arm 6 of lever E being forced by the expansion member B into such position that the projection a (see Fig. 2) on the end of arm 6 compresses the diaphragm 7c, forcing the valve-stem 70 backward, so unseating thevalve-plug 70 k k are caps of valves K K, respectively, these caps having apertures K therein, respectively, through which a projection on lever E passes to move the valve-rod 70 against the resiliency of spring 70". Arm e Fig. 1, or arm c, Fig. 4, of lever E forces back the valve-stem of valve K in like manner as arm e of such leverE forces back the valve-stem of valve K, as last above described, when the expansible member B of the thermostatic valve is oppositely operated, thereby opening the valve K'--that is, thereby forcing the valve thereof off its seatso that the two chambers in such valve are in communication with each other in the manner described relative to valve K, and the diaphragm 70 being punctured or such diaphragm being omitted from the construction of such valve the chamber adjacent to arm a is in communication with the atmosphere, so that air discharged into the valve from the conduit M is discharged into the atmosphere, and thereby the diaphragm of diaphragm-valve Gis forced into a retracted position, as by springs g g,

and the valve opened for the admission of steam in the radiator I.

In the construction of this apparatus which I prefer the lever E is bent, as at e" 6 at right angles and tied together, as by crossbars 6 6 but whatever construction is used the parts are so related that the valves K K will both be closed for a short time in the movement of such lever E to and fro by the expansion and retraction of the expansible member of the thermostatic valve and then one or the other of said valves will be opened, as hereinabove described.

Inthe operation of the thermostatic apparatus embodying this invention air under sufficient pressure to move the diaphragm in the chamber into which conduit M discharges will alternately be forced into such chamber and expelled therefrom, and thereby steam will alternately be admitted to radiator I from steam -supply pipe H through diaphragmvalve G and shut off from such radiator.

The thermostatic apparatus embodying this invention is made adjustable, so as to operate to automatically open and close, as described, the valves K K at a desired temperature, such adjustability being obtained by means of the thumb-nutU and head D, fitting on the screw-threads u of the rod b, there- IIO by forcing the head D into a desired position (as such head is slightly turned on the rod) closed and any material variation in the temperature of such air will cause either one or the other of the valves K K to be opened.

It is evident that where a temperature-controlled apparatus is not desired the lever E may be disconnected from the expansible member B, as by withdrawing the pivot e, and that such lever may then be moved to and fro by the hands to open and close the valve G, and so admit steam to a radiator or shut steam therefrom at the will of the operator. It is also evident that the lever E and valves K K, provided with a communicating passage-Way, as by conduit E, in combination with a source of supply F containing air under pressure, a conduit J therefrom to one of the valves K, a conduit M from the other valve K to a chamber into which such last-named conduit discharges, may be used without the thermostatic device in any apparatus when a pressure corresponding with the pressure in a source of air-supply is desired to be obtained alternately with atmospheric pressure in such chamber by hand manipulation of alever E. It is also evident that except for ease of operation and liability of leakage an ordinary stuffing-box may be substituted for the diaphragm Having thus described my invention, what I claim as new, and desireto secure by Letters Patent, is-

1. In a thermostatic heat-regulator, the

combination of an expansible member, a fulcrumed lever, a connection between the eX- pansible member and the lever adjacent to the fulcrum of the lever, valve-casings provided, respectively, with valves cooperating with valve-seats in the casings, such valves provided with stems extending adjacent to the lever, but not in contacttherewith when both the valves are seated and the lever is in its midway position, means for yieldingly holding the respective valves seated, a diaphragm at one end of one of the valve-casings interposed between the end of the valve-stem and the lever adjacent thereto, and such cas- .ing provided with an inlet for discharging air, under pressure, thereinto on one side of the valve thereof and provided on the other side of such valve, and between the valveseat therein and such diaphragm with a communicating passage-way extending from such casing to the second-named valve-casing and discharging thereinto on one side of the valve therein, an outlet from such last-named casing on such side of the valve therein, such outlet communicating with a conduit dischargin ginto the diaphragm-chamber of a diaphragm steam-valve, and an outlet to the atmosphere from the last-named valve-casing on the other side of the valve therein; substantially as described.

2. In an air-controlling device for a heatregulating system, the combination of a primary or inlet air-chamber provided with an inlet air-duct, a secondary air-chamber, an air-duct communicating between the primary and secondary air-chambers, an outlet aircontrolling valve located in the primary airchamber, adapted to control the discharge of air therefrom into the secondary air-chamber, an air-duct communicating between the secondary air-chamber and an additional airchamber, an additional air-chamber, an airduct communicating between such additional air-chamber anda diaphragm air-chamber, of a steam-controlling valve, and an additional air-duct from the additional air-chamber communicating with the atmosphere, an

'air-controllin g valve located in the additional air-chamber adapted to control the escape of air therefrom-5 each of said air-controlling valves being provided with protruding valvestems extending through the air-duct closed by the seating thereof, respectively, a thermostatically-actuated. arm communicating 1 with the protruding stems of the air-controlling valves, the thermostatically-actuated arm adapted, as it moves in either direction, to engage and actuate the stem of one of said air-controlling valves as the other is automatically closed; substantially'as set forth and described.

ALBERT M. BUTZ.

Witnesses:

CHARLES TURNER BROWN, FLORA L. BROWN. 

